diff --git a/ui/button/button.android.ts b/ui/button/button.android.ts
index b5f29d114..199fba08b 100644
--- a/ui/button/button.android.ts
+++ b/ui/button/button.android.ts
@@ -1,11 +1,8 @@
 import common = require("ui/button/button-common");
+import utils = require("utils/utils")
 
 global.moduleMerge(common, exports);
 
-interface Owned {
-    owner: any;
-}
-
 export class Button extends common.Button {
     private _android: android.widget.Button;
     private _isPressed: boolean;
@@ -27,7 +24,7 @@ export class Button extends common.Button {
         this._android = new android.widget.Button(this._context);
 
         this._android.setOnClickListener(new android.view.View.OnClickListener(
-            <Owned & android.view.View.IOnClickListener>{
+            <utils.Owned & android.view.View.IOnClickListener>{
             get owner() {
                 return that.get();
             },
diff --git a/ui/date-picker/date-picker.android.ts b/ui/date-picker/date-picker.android.ts
index a121ae333..5fd09f310 100644
--- a/ui/date-picker/date-picker.android.ts
+++ b/ui/date-picker/date-picker.android.ts
@@ -2,6 +2,7 @@
 import dependencyObservable = require("ui/core/dependency-observable");
 import proxy = require("ui/core/proxy");
 import types = require("utils/types");
+import utils = require("utils/utils")
 
 function onYearPropertyChanged(data: dependencyObservable.PropertyChangeData) {
     var picker = <DatePicker>data.object;
@@ -65,10 +66,6 @@ function onMinDatePropertyChanged(data: dependencyObservable.PropertyChangeData)
 
 global.moduleMerge(common, exports);
 
-interface Owned {
-    owner: any;
-}
-
 export class DatePicker extends common.DatePicker {
     private _android: android.widget.DatePicker;
     public _listener: android.widget.DatePicker.OnDateChangedListener;
@@ -83,7 +80,7 @@ export class DatePicker extends common.DatePicker {
         var that = new WeakRef(this);
 
         this._listener = new android.widget.DatePicker.OnDateChangedListener(
-            <Owned & android.widget.DatePicker.IOnDateChangedListener>{
+            <utils.Owned & android.widget.DatePicker.IOnDateChangedListener>{
             get owner() {
                 return that.get();
             },
diff --git a/ui/list-picker/list-picker.android.ts b/ui/list-picker/list-picker.android.ts
index 46d55cd99..0ac62c48b 100644
--- a/ui/list-picker/list-picker.android.ts
+++ b/ui/list-picker/list-picker.android.ts
@@ -1,13 +1,10 @@
 import common = require("ui/list-picker/list-picker-common");
 import dependencyObservable = require("ui/core/dependency-observable");
 import types = require("utils/types");
+import utils = require("utils/utils")
 
 global.moduleMerge(common, exports);
 
-interface Owned {
-    owner: any;
-}
-
 export class ListPicker extends common.ListPicker {
     private _android: android.widget.NumberPicker;
     private _valueChangedListener: android.widget.NumberPicker.OnValueChangeListener;
@@ -33,7 +30,7 @@ export class ListPicker extends common.ListPicker {
         var that = new WeakRef(this);
 
         this._formatter = new android.widget.NumberPicker.Formatter(
-            <Owned & android.widget.NumberPicker.IFormatter>{
+            <utils.Owned & android.widget.NumberPicker.IFormatter>{
             get owner(): ListPicker {
                 return that.get();
             },
@@ -48,7 +45,7 @@ export class ListPicker extends common.ListPicker {
         });
         this._android.setFormatter(this._formatter);
 
-        this._valueChangedListener = new android.widget.NumberPicker.OnValueChangeListener(<Owned & android.widget.NumberPicker.IOnValueChangeListener>{
+        this._valueChangedListener = new android.widget.NumberPicker.OnValueChangeListener(<utils.Owned & android.widget.NumberPicker.IOnValueChangeListener>{
             get owner() {
                 return that.get();
             },
diff --git a/ui/list-view/list-view.android.ts b/ui/list-view/list-view.android.ts
index 8810b4b69..764fb33c7 100644
--- a/ui/list-view/list-view.android.ts
+++ b/ui/list-view/list-view.android.ts
@@ -7,6 +7,7 @@ import proxy = require("ui/core/proxy");
 import dependencyObservable = require("ui/core/dependency-observable");
 import color = require("color");
 import definition = require("ui/list-view");
+import utils = require("utils/utils")
 
 var ITEMLOADING = common.ListView.itemLoadingEvent;
 var LOADMOREITEMS = common.ListView.loadMoreItemsEvent;
@@ -27,10 +28,6 @@ function onSeparatorColorPropertyChanged(data: dependencyObservable.PropertyChan
     }
 }
 
-interface Owned {
-    owner: any;
-}
-
 // register the setNativeValue callbacks
 (<proxy.PropertyMetadata>common.ListView.separatorColorProperty.metadata).onSetNativeValue = onSeparatorColorPropertyChanged;
 
@@ -54,7 +51,7 @@ export class ListView extends common.ListView {
         var that = new WeakRef(this);
 
         // TODO: This causes many marshalling calls, rewrite in Java and generate bindings
-        this.android.setOnScrollListener(new android.widget.AbsListView.OnScrollListener(<Owned & android.widget.AbsListView.IOnScrollListener>{
+        this.android.setOnScrollListener(new android.widget.AbsListView.OnScrollListener(<utils.Owned & android.widget.AbsListView.IOnScrollListener>{
             onScrollStateChanged: function (view: android.widget.AbsListView, scrollState: number) {
                 var owner: ListView = this.owner;
                 if (!owner) {
diff --git a/ui/search-bar/search-bar.android.ts b/ui/search-bar/search-bar.android.ts
index c708ca2dc..f6a303011 100644
--- a/ui/search-bar/search-bar.android.ts
+++ b/ui/search-bar/search-bar.android.ts
@@ -3,6 +3,7 @@ import dependencyObservable = require("ui/core/dependency-observable");
 import proxy = require("ui/core/proxy");
 import color = require("color");
 import types = require("utils/types");
+import utils = require("utils/utils")
 
 var SEARCHTEXT = "searchText";
 var QUERY = "query";
@@ -92,10 +93,6 @@ function _changeSearchViewHintColor(bar: android.widget.SearchView, color: numbe
 
 global.moduleMerge(common, exports);
 
-interface Owned {
-    owner: any;
-}
-
 export class SearchBar extends common.SearchBar {
     private _android: android.widget.SearchView;
 
@@ -105,7 +102,7 @@ export class SearchBar extends common.SearchBar {
         this._android.setIconified(false);
 
         var that = new WeakRef(this);
-        this._android.setOnQueryTextListener(new android.widget.SearchView.OnQueryTextListener(<Owned & android.widget.SearchView.IOnQueryTextListener>{
+        this._android.setOnQueryTextListener(new android.widget.SearchView.OnQueryTextListener(<utils.Owned & android.widget.SearchView.IOnQueryTextListener>{
             get owner() {
                 return that.get();
             },
@@ -136,7 +133,7 @@ export class SearchBar extends common.SearchBar {
             }
         }));
 
-        this._android.setOnCloseListener(new android.widget.SearchView.OnCloseListener(<Owned & android.widget.SearchView.IOnCloseListener>{
+        this._android.setOnCloseListener(new android.widget.SearchView.OnCloseListener(<utils.Owned & android.widget.SearchView.IOnCloseListener>{
             get owner() {
                 return that.get();
             },
diff --git a/ui/switch/switch.android.ts b/ui/switch/switch.android.ts
index 7bd9d60cd..eeb431eff 100644
--- a/ui/switch/switch.android.ts
+++ b/ui/switch/switch.android.ts
@@ -1,6 +1,7 @@
 import common = require("ui/switch/switch-common");
 import dependencyObservable = require("ui/core/dependency-observable");
 import proxy = require("ui/core/proxy");
+import utils = require("utils/utils")
 
 function onCheckedPropertyChanged(data: dependencyObservable.PropertyChangeData) {
     var swtch = <Switch>data.object;
@@ -16,10 +17,6 @@ function onCheckedPropertyChanged(data: dependencyObservable.PropertyChangeData)
 
 global.moduleMerge(common, exports);
 
-interface Owned {
-    owner: any;
-}
-
 export class Switch extends common.Switch {
     private _android: android.widget.Switch;
 
@@ -32,7 +29,7 @@ export class Switch extends common.Switch {
 
         var that = new WeakRef(this);
 
-        this._android.setOnCheckedChangeListener(new android.widget.CompoundButton.OnCheckedChangeListener(<Owned & android.widget.CompoundButton.IOnCheckedChangeListener>{
+        this._android.setOnCheckedChangeListener(new android.widget.CompoundButton.OnCheckedChangeListener(<utils.Owned & android.widget.CompoundButton.IOnCheckedChangeListener>{
             get owner() {
                 return that.get();
             },
diff --git a/ui/time-picker/time-picker.android.ts b/ui/time-picker/time-picker.android.ts
index 370917f6c..5bdc491eb 100644
--- a/ui/time-picker/time-picker.android.ts
+++ b/ui/time-picker/time-picker.android.ts
@@ -1,6 +1,7 @@
 import common = require("ui/time-picker/time-picker-common");
 import dependencyObservable = require("ui/core/dependency-observable");
 import proxy = require("ui/core/proxy");
+import utils = require("utils/utils")
 
 function onHourPropertyChanged(data: dependencyObservable.PropertyChangeData) {
     var picker = <TimePicker>data.object;
@@ -18,10 +19,6 @@ function onMinutePropertyChanged(data: dependencyObservable.PropertyChangeData)
 
 global.moduleMerge(common, exports);
 
-interface Owned {
-    owner: any;
-}
-
 export class TimePicker extends common.TimePicker {
     private _android: android.widget.TimePicker;
     private _listener: android.widget.TimePicker.OnTimeChangedListener;
@@ -37,7 +34,7 @@ export class TimePicker extends common.TimePicker {
         var that = new WeakRef(this);
 
         this._listener = new android.widget.TimePicker.OnTimeChangedListener(
-            <Owned & android.widget.TimePicker.IOnTimeChangedListener>{
+            <utils.Owned & android.widget.TimePicker.IOnTimeChangedListener>{
             get owner() {
                 return that.get();
             },
diff --git a/utils/utils.d.ts b/utils/utils.d.ts
index c54596630..2f82dbacf 100644
--- a/utils/utils.d.ts
+++ b/utils/utils.d.ts
@@ -3,6 +3,15 @@
 
     export var RESOURCE_PREFIX: string;
 
+    //@private
+    /**
+     * Used by various android event listener implementations
+     */
+    interface Owned {
+        owner: any;
+    }
+    //@endprivate
+
     /**
      * Utility module related to layout.
      */